TY - GEN
T1 - Designing Reliable Virtualized Radio Access Networks
AU - Usubütün, Ufuk
AU - Gomes, André
AU - Narayanan, Shankaranarayanan Puzhavakath
AU - Hiltunen, Matti
AU - Panwar, Shivendra
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024
Y1 - 2024
N2 - As virtualization of Radio Access Networks (RAN) gains momentum, understanding the impact of hardware and software disaggregation on resiliency becomes critical to meet the high availability requirements of mobile networks. Our paper presents an analytical model, using continuous time Markov chains, to study the impact of virtualization and disaggregation on RAN availability. Our evaluation, assuming typical parameter value ranges for failure and recovery rates, points to container-ized platform reliability as a constraint on vRAN availability. We also find that with active-passive replication, increasing hardware replication factor beyond 2 may not bring any benefits unless failover times are reduced. We also compare the reliability of centralized and distributed virtualized central units.
AB - As virtualization of Radio Access Networks (RAN) gains momentum, understanding the impact of hardware and software disaggregation on resiliency becomes critical to meet the high availability requirements of mobile networks. Our paper presents an analytical model, using continuous time Markov chains, to study the impact of virtualization and disaggregation on RAN availability. Our evaluation, assuming typical parameter value ranges for failure and recovery rates, points to container-ized platform reliability as a constraint on vRAN availability. We also find that with active-passive replication, increasing hardware replication factor beyond 2 may not bring any benefits unless failover times are reduced. We also compare the reliability of centralized and distributed virtualized central units.
KW - availability
KW - disaggregation
KW - modeling
KW - reliability
KW - replication
KW - Virtual Radio Access Network
KW - virtualization
UR - http://www.scopus.com/inward/record.url?scp=105000830944&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=105000830944&partnerID=8YFLogxK
U2 - 10.1109/GLOBECOM52923.2024.10900948
DO - 10.1109/GLOBECOM52923.2024.10900948
M3 - Conference contribution
AN - SCOPUS:105000830944
T3 - Proceedings - IEEE Global Communications Conference, GLOBECOM
SP - 583
EP - 589
BT - GLOBECOM 2024 - 2024 IEEE Global Communications Conference
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2024 IEEE Global Communications Conference, GLOBECOM 2024
Y2 - 8 December 2024 through 12 December 2024
ER -